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The Church & Her Teaching

οἰκουμένη

Ecumenical Council

ek-yoo-MEN-ih-kul

Greek · oikoumenē · Acts 15:1-29

A gathering of bishops from throughout the Church with and under the pope to teach and legislate for the whole Church; the Catholic Church counts twenty-one, from Nicaea (325) to Vatican II (1962–65).

the inhabited world

The pattern was set at Jerusalem, when the apostles and elders met to decide what to ask of Gentile converts. An ecumenical (worldwide) council is the bishops of the whole Church gathered with and under the pope; its solemn definitions of faith and morals are infallible and its decrees bind the universal Church once the pope confirms them. The Church counts twenty-one, and the first seven — Nicaea, Constantinople, Ephesus, Chalcedon, and three more — gave us the Creed and the doctrine of Christ that all the ancient churches share. A council's authority comes from Christ's promise to the apostles, not from majority vote.

Acts 15:1-29Mt 18:18-20CCC 884CCC 891

Councils

Where the Church settled or debated this. Follow a council to read our article on it, or the decrees themselves.

Sources

Church teaching

  • Code of Canon Law
    Code of Canon Law (1983), canons 337–341, on the ecumenical council as an exercise of the college of bishops' power.

Sources checked 29 September 2026